Passenger Carrier Regulations and Driver Qualifications
What this domain tests
This domain tests who may drive a passenger vehicle and what credentials must be valid before driving. The exam asks about the passenger endorsement, medical certification, drug and alcohol rules, and driver qualification records.
Core rules
- A CDL with a passenger (P) endorsement is required for a vehicle designed to carry 16 or more passengers, including the driver. A school bus requires the separate S endorsement.
- CDL age minimums: 18 for intrastate operation and 21 for interstate operation.
- A current medical examiner's certificate and self-certification are required. If the medical card expires, the driver cannot legally drive until it is renewed.
- Drug and alcohol testing includes pre-employment, random, reasonable suspicion, and post-crash testing. Drivers must be cleared through the drug and alcohol clearinghouse as required.
- A CDL driver is prohibited from driving with a blood alcohol concentration of 0.04 or higher. Report convictions and license suspensions to the carrier.
- The driver qualification file includes the application, motor vehicle record, road test, and medical documentation.
Worked example
A driver holds a valid P endorsement but the medical examiner's certificate expired yesterday. Reasoning: the P endorsement alone is not enough; medical certification is a condition of driving. The driver must be removed from passenger service until a new DOT physical is completed and the certificate is on file.
Traps
Thinking the P endorsement covers a school bus; driving with an expired medical card; using the 0.08 criminal limit instead of the 0.04 CDL limit; failing to report a conviction; assuming a valid license alone proves qualification.